Update app.py

app.py

@@ -12,7 +12,7 @@ from Gradio_UI import GradioUI
 def wikipedia_search(question: str) -> str:
     """Search Wikipedia for factual information about a topic, person, place or concept.
     Args:
-        Question about a topic, person, place, or concept: str
+        question: Question about a topic, person, place, or concept: str
     Output:
         Answer to the question based on content in wikipedia: str
     """